Proportional Directional Valve 4WRLE25V370M-4X/MXY/24A1 - Bosch Rexroth R901401731

An axis should meter carefully in the fine control range and cross the stroke quickly in rapid traverse. This size 25 version of the 4WRLE solves that with a progressive characteristic and a linear fine control range, while internal piston position feedback holds the spool at the command value. Nominal flow is 370 l/min and maximum flow 1250 l/min.

Benefits

• Progressive characteristic with a linear fine control range, plus internal piston position feedback for accurate reproduction of the command value
• 370 l/min nominal flow and 1250 l/min maximum flow on connection diagram ISO 4401-08-08-0-05
• Analog command value ±10 V at 24 VDC with on-board electronics mounted on the valve
• External pilot oil supply and external pilot oil return keep the pilot pressure separate from the main circuit
• Spool symbol V, three switching positions, four ports, operating pressure up to 350 bar
• NBR seals for hydraulic fluid HL, CE conformity, weight 18.72 kg

Applications

Closed-loop valves of size 25 run in presses, bending machines, casting plants and test rigs where a cylinder has to follow a path or track a force.

The progressive characteristic gives fine resolution around the centre position and opens widely towards the end stops, which brings positioning and rapid traverse together in one valve. External pilot oil supply pays off where the main pressure drops sharply, for example when large masses are accelerated.

Manufacturer

Bosch Rexroth lists the valve under material number R901401731. The type code 4WRLE25V370M-4X/MXY/24A1 states the size, the spool symbol, the nominal flow and the pilot oil routing.